/*
 * Copyright (c) 2026 University of Insubria <https://www.uninsubria.it>
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or (at
 * your option) any later version. All we ask is that proper credit is given
 * for our work, which includes - but is not limited to - adding the above
 * copyright notice to the beginning of your source code files, and to any
 * copyright notice that you may distribute with programs based on this work.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation, Inc.
 * <https://fsf.org/>
 */

package qsardes.descriptor.qsarwb;

import qsardes.descriptor.DescriptorHBondAcceptorsCount;

/**
 * Hydrogen bond acceptors count descriptors (QSAR-WB Descriptors).
 * <BR><BR>
 * Calculates hydrogens bond acceptors count descriptors.
 * <BR><BR>
 * Returns
 * <BR><BR>
 * nHBAcc - Number of hydrogen bond acceptors.
 * <BR><BR>
 * nHBAcc2 - Number of hydrogen bond acceptors (any oxygen; any nitrogen
 * where the formal charge of the nitrogen is non-positive
 * (i.e. formal charge smaller or equal to 0) except a non-aromatic nitrogen
 * that is adjacent to an oxygen and aromatic ring, or an aromatic nitrogen
 * with a hydrogen atom in a ring, or an aromatic nitrogen with 3 neighouring
 * atoms in a ring, or a nitrogen with total bond order >=4; any fluorine).
 * <BR><BR>
 * nHBAcc3 - Number of hydrogen bond acceptors (any oxygen; any nitrogen
 * where the formal charge of the nitrogen is non-positive
 * (i.e. formal charge smaller or equal to 0) except a non-aromatic nitrogen
 * that is adjacent to an oxygen and aromatic ring, or an aromatic nitrogen
 * with a hydrogen atom in a ring, or an aromatic nitrogen with 3 neighouring
 * atoms in a ring, or a nitrogen with total bond order >=4, or a nitrogen
 * in an amide bond; any fluorine).
 * <BR><BR>
 * nHBAcc_Lipinski - Number of hydrogen bond acceptors (using Lipinski's
 * definition: any nitrogen; any oxygen).
 *
 * @author Nicola Chirico
 */
public final class QsarWBHBondAcceptorsCount
        extends DescriptorHBondAcceptorsCount
{
    public QsarWBHBondAcceptorsCount()
    {
    }
}
